US3768920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-flow air blower for fuel operated motor vehicle heaters
Assignee: Eberspaecher Climate Control Systems GmbH and Co KG
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Filing: 1972-07-12
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Granted: 1973-10-30
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Expires: 1992-07-12
Abstract
Abstract A multi-flow air blower for a motor vehicle heater is provided with a housing having a cover member defining a flow channel for air passage through the blower. A bladed impeller located within the housing operates to drive through the blower and into the channel defined by the cover member. A plurality of transversely extending web plates are provided within the cover member with the webs being positioned to define on either side thereof an air inlet opening and an air outlet opening. Slidable switching means operatively associated with said webs are actuated between a first and a second position in order to selectively open or close the inlet and outlet openings defined by the webs thereby enabling selection of the number of air flow paths with which the blower is operated.
Inventors
- 👤 R Gerwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:17
CPC Classifications
F; F04; F04D; F04D23/00; F04D23/008; F04D29/00; F04D29/08; F04D29/16; F04D29/161
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
195 words
An air blower particularly suitable for delivery of combustion air to a motor vehicle heater including side channel means through which said air is discharged from said blower comprising housing means, impeller means having fixed blades thereon operatively located within said housing for driving air through said blower, cover means formed as a portion of said housing means and defining together therewith a portion of said side channel means through which air flow is directed through said blOwer, and air flow guide means structurally associated with said cover means for dividing said side channel means into a plurality of distinct flow passages, said guide means including a transverse web for each of said flow passages defining on either side thereof an inlet opening and an outlet opening for each of said flow passages and closure means selectively movable between a first and a second position to block air flow through selected ones of said flow passages when in said first position and to permit air flow therethrough when in said second position, whereby said air blower may be operated to provide a selected number of air flow passages for delivering combustion air to said heater.
Claim 2
Dependent Claim
195 words
An air blower particularly suitable for delivery of combustion air to a motor vehicle heater including side channel means through which said air is discharged from said blower comprising housing means, impeller means having fixed blades thereon operatively located within said housing for driving air through said blower, cover means formed as a portion of said housing means and defining together therewith a portion of said side channel means through which air flow is directed through said blOwer, and air flow guide means structurally associated with said cover means for dividing said side channel means into a plurality of distinct flow passages, said guide means including a transverse web for each of said flow passages defining on either side thereof an inlet opening and an outlet opening for each of said flow passages and closure means selectively movable between a first and a second position to block air flow through selected ones of said flow passages when in said first position and to permit air flow therethrough when in said second position, whereby said air blower may be operated to provide a selected number of air flow passages for delivering combustion air to said heater.
Claim 3
Dependent Claim
67 words
A blower according to claim 1, wherein said guide means are mounted to separate said side channel from said impeller means and include a flat plate partially covering said impeller means which operates as said closure means, and wherein said web is arranged to extend obliquely to the direction of air flow through said side channel, with said guide means being detachably mounted upon said cover means.
Claim 4
Dependent Claim
74 words
A blower according to claim 1, wherein said housing means and said cover means are formed to define said side channel means in a generally circumferential configuration extending about said blower, with said impeller means being rotatable about an axis of rotation generally centrally located relative thereto, said web means being arranged to define said inlet openings in a location more remote from said axis of rotation than the location of said outlet openings.
Claim 5
Dependent Claim
43 words
A blower according to claim 3, wherein said inlet openings are defined by the arrangement of said webs to have a generally tapering configuration which is wider on the side of said inlet openings which is more remote from said axis of rotation.
Claim 6
Dependent Claim
39 words
A blower according to claim 4, wherein said outlet openings are defined by the arrangement of said webs to have a generally tapering configuration which is wider on the side of said outlet openings closest said axis of rotation.
Claim 7
Dependent Claim
52 words
A blower according to claim 1, wherein said closure means comprise a generally arcuate plate member which is movable relative to an individual one of said webs and positionable to divert air flow about said web to block the air flow passage whose inlet and outlet openings are defined by said web.
Claim 8
Dependent Claim
73 words
A blower according to claim 1, wherein said closure means in said web are formed in a single unitary member which is slidable between a first and a second position in a direction transverse to the direction of air flow through said side channel means, said unitary member defining an air flow passage for said blower when in said first position and rendering said air flow passage inoperative when in said second position.
Claim 9
Dependent Claim
60 words
A blower according to claim 1, wherein said cover means defines said side chanel means in a generally circumferential configuration extending about said blower, with said inpeller means being located therebelow within said housing means, said webs being arranged within said cover means to define said plurality of distinct flow passages in spaced apart circumferential locations on said cover means.
Claim 10
Dependent Claim
84 words
A blower according to claim 7, wherein said webs are arranged within said cover means to define said inlet openings in a location to receive inlet air in a direction radially inwardly of said blower, with said outlet openings being arranged and located to expel said air in a direction radially inwardly of said blower, said blower including a common outlet passage arranged to receive air flow from each of the outlet openings of an operative flow passage for delivery therefrom to said heater.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |